Cold accumulation packing bag

Abstract

A cold accumulation packing bag comprises a bag tube formed by a bag wall, a storage space is formed inside the bag tube, and the bag wall adopts a multilayer structure and comprises an inner wall layer, two cold accumulation layers and an outer wall layer from the inside out; the two cold accumulation layers are arranged side by side and separated from each other, each cold accumulation layer comprises an outer side outer film and an inner side outer film, the outer side outer film is in welded connection with the inner side outer film through heat-seal lines formed through hot pressing, and a plurality of mutually separated fluid reservoirs filled with a cold accumulation agent are arranged between the heat-seal lines; and the inner wall layer, the outer wall layer, the outer side outer film and the inner side outer film on the edge of the bag wall are in welded connection through the heat-seal lines formed through hot pressing. The temperature of commodities placed inside the storage space is kept through that the cold accumulation agent releases cold gradually, the cold accumulation packing bag provided by the invention has the advantages of simple use and wide application scope, can fully solve the problems in the final link of the cold chain logistics at the present stage, and meets the requirements of low temperature preservation and transportation of different commodities.

Description

technical field [0001] The invention relates to the technical field of cold chain logistics, in particular to a convenient cold storage packaging bag. Background technique [0002] Coolant is usually a viscous jelly mixture composed of organic or inorganic compounds, which can absorb and store a large amount of cold energy at low temperatures, and release a large amount of cold energy when the temperature is high, so that it can maintain itself for a long time. Low temperature environment in a small range around. [0003] The main problem in the field of cold chain transportation such as food, medicine and vaccines is the broken chain of the cold chain link. Food and medicine are pre-cooled at the place of origin and loaded into the transport vehicle to reach the wholesale market at the place of sale, and finally enter the retail link for storage. Both are prone to cold chain breaks. The use of cooling agents can effectively solve the problems encountered in the pre-coolin...

AI Technical Summary

Problems solved by technology

[0004] The cold storage agent is usually packaged in the cold storage plate for use. The cold storage plate in the prior art is designed as a rectangular parallelepiped plate structure. According to the specific use, the cold storage plate is processed into various volumes, but the existing The cold storage plate in the technology is generally thick, which makes it inconvenient to use

When used in conjunction with the transport box, the traditional cold storage plate can only be placed on the surface and surroundings of the transported object, resulting in uneven transmission of cold energy in the box. When the placement is irregular, the above disadvantages are more obvious

In addition, traditional cold storage plates are only suitable for transportation in cold chain logistics and cannot be used in daily life, that is, ordinary consumers cannot touch and use them.

At the end of the cold chain logistics, consumers are still unable to smoothly transfer items that need to be kept in a refrigerated state. When transferring items, they still need to use inconvenient refrigerators, cold storage boxes, etc. for packaging

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